Milk-clarifier.



No. 833,540. PATENTED 001416, 1906.

H. P. OLSEN.

"MILK OLARIFIER.

APPLICATION FILED APR.28.1906.

THE NORRIS pzrskspa, wnsmmn'on. I). c.

UNITED STATES PATENT OFFICE.

HANS P. OLSEN, OF CHICAGO, ILLINOIS.

MlLK-CLAFHFIER.

Specification of Letters Patent.

Patented Oct. 16, 1906.

Application filed April 28, 1906. Serial No.. 314,271.

To all whom, it may concern: Be it known that I, HANS P. OLSEN, acitizen of the United States, residing at Chicago,

in the county of Cook and State of Illinois, have invented certain newand useful Improvements in Milk-Clarifiers, of which the following is aspecification.

' My inventionrelates to improvements in "milleclarifying apparatus, andhas for its primary object to rovide a clarifier or filter for milkwhich wil efficiently extract from the milk in the process of filtrationall foreign substances and physical impurities and ,which will 1produceno deleterious effects upon the'mi k undergoing filtration.

Further, it is an object of my invention to provide a milk-filter whichwill efficiently handle-large quantities of milk in a relatively cooledCOIlditlOIl without becoming clogged.

Another object of my invention is to provlde a device of the generalcharacter described wherein the parts are readily accessiwherein meansare provided for securing the proper distribution of the milk to thefiltering-surfaces and wherein provision is made for the easy renewal.of the filter material and its maintenance in proper position while inplace in the device.

Other and further objects of my invention will best become a parent tothose skilled in the art from the fo lowing description, taken inconjunction with the accompanying drawings, wherein Fi ure 1 is acentral section taken longitudinal y through a device embodying myinvention. Fig. 2 is a detail of a filter-material holder. Fig. 3 is adetail of a distributingtray.

In. the drawings, 5 indicates in general a milk-reservoir from whichmilk is to be fed, and 6 the strained-milk receptacle provided with anoutlet, herein represented by the faucet 7. Within the receptacle 6 isarranged the filter proper. The filterpreferably consists of twofilter-beds in superposed relation, the upper bed being of relativelycoarser character and the lower bed being of relatively finer character.

Specifically, 8 indicates the lower filter-bed frame, preferably ofsheet-metal construction, of a configuration generally conforming withthat of the receptacle 6 and provided at itsupper edge with a rim orflange 9, overlying the edge of receptacle 6, and around its lower edgewith a gutter 10. .Across the opening between the inturned edges of thegutter is stretched aperforate bottom 11, preferably of wire-gauze orother reticulated material, receiving support on suitable slats '12,extending across the frame 8. In preparation of the filter for operationa filter-bed 13 of cotton-battin or like material of very closefiltering qualitles adapted to catch very fine impurities, is laid uponthe reticulated bottom 11, the filter-bed 13 being of greater area thanthe bottom 11, so that the edges of the bed material overlie the gutter10. For holding the bed material in lace I provide a holder 14 (bestillustrated in Fig. 2) of configuration corresponding with that of thegutter 10 and preferably rovided at its corners with triangular overying corner-pieces 15. This frame is preferably of metal and ofrelatively great weight. 'It is laid upon the filter material in themanner shown in Fig. 1, and. its vertical. edges force the filtermaterial down into and wedge it in the gutter 10. The corner-pieces 15,overlying the corners of the filter material, also assist in maintainingsaid material against movement when the filter is in operation.

Above the lower filter-bed is arranged an upper filter-bed of generallylike construction, comprising a frame 8, nesting within the frame 8 andprovided with the outturned flange 9, a gutter 10 a reticulated. bottom11, and slats 12, all substantially as described in conjunction with thefirst-described filter-bed frame. Upon the filterbed frame 8 is provideda coarser filter-bed 16 in practice preferably made up of a plurality oflayers of cheese-cloth or other relatively coarse filtering material. Aframe 14', like the frame 14 save only in size, is applied in the mannerhertofore described to hold the filter-bed 16 in place.

It will of course be understood that other materials than thosespecified may be used in the filter-beds, the particular materials'being here specified only by way of practical example.

I preferably provide above each of the filter-beds a distributing-traycomprising an inclined metallic sheet whereon the milk coming from abovemay fall and be fed gently upon the filter-surface therebelow to preventundue agitation of the milk already upon the filter-surface.

Specifically, 17 indicates a distributingtray provided with a rail 18 onthree sides and open along one end, said tray being provided with feet19, arranged to incline it slightly toward its open end. This tray 17 isset upon the lower filter-bed 13 in such position as to leave a spacebetween its open edge and the end wall of the frame 8. A tray 17 forsimilar functions, but preferably compwrising rails 18 ofgradually-increasing dept along the sides from the closed to the openend and outturned, as at 19, at their upper edges to overlie the flanges9 of the frame 8, is arranged in a generally similar manner above thefilter-bed 16.

It will be seen that the device may be readily taken apart, each partbeing separable from all the others and susceptible of ready cleansingand sterilizing. The filter material may after each operation of thefilter be removed and thoroughly cleansed or destroyed and, freshmaterial inserted for the next operation.

In operation the milk delivered from the reservoir 5 falls upon the tray17 and flows down in a slow stream upon the filter-bed 16 therebeneath,where it distributes, forming a pool covering the bed, and graduallydrips through the filter-bed 16, leaving thereupon and between thecheese-cloth layers the larger foreign particles and impurities. Thedrops of milk after passing through the filter-bed 16 are caught uponthe tray 17 therebeneath and are distributed to the lower filter-bed 13in like manner. On the lower filter-bed the milk distributes and filtersthrough the material 13, depositing its smaller or finer impuritiesthereon.

I have found from experience that this construction does not fill up orclog with impurities, and the milk may be handled therein in a cooledcondition and in large quantities, probably in virtue of the separationof the impurities upon the two difierent filter-beds and in virtue,further, to the even and gentle distribution of milk over eachfilter-bed, whereby massing of the impurities at any one portion of thebed and consequent formation of a clot or clog is prevented.

While I have herein described in some detail a specific embodiment of myinvention which I have found to be practical and advantageous ofconstruction, I do not desire to be understood as limiting my inventionto the exact construction shown and described further than as specifiedin the claims, as it will be apparent that numerous changes in thephysical embodiment of my invention might be made bythose skilled in theart without departure from the spirit and scope thereof.

Having thus described my invention, what I claim, and desire to secureby Letters Patent of the United States, is

1. In a milk-filter, a receptacle of relatively large area in plan,having arranged therein in superposed relation in horizontal position aplurality of filter-beds, and a tray interposed between said beds andarranged at a slight angle to the horizontal to gently conduct drippingsfrom the upper bed into the lower bed,.to conduce to the formation andmaintenance of a pool on the second bed with a minimum of agitation ofthe pool, whereby even distribution of the milk and impurities to thefilter-bed is secured.

2. In a milk-filter, a receptacle of relatively large area in plan,having therein in superposed relation an upper filter-bed comprisingsuperposed layers of textile material, and a lower filter-bed comprisinga material of finer straining qualities than the upper bed, each of saidbeds being substantially coextensive with the receptacle, and disposedhorizontally, and above each filter-bed a tray, slightly inclineddownwardly toward the filter-bed and at its lower end open, andseparated somewhat from the end of the casing, substantially asdescribed.

3. In a milk-filter, a receptacle of relatively large area in plan,having therein in superposed relation an upper filter-bed, comprisingsuperposed layers of textile material, and a lower filter-bed comprisinga layer of cotton-batting, each of said beds being sub stantiallycoextensive with the receptacle, and disposed horizontally, a trayrimmed on three sides arranged above the filter-bed slightly inclineddownward toward its open end and approaching the filterbed, and a secondtray rimmed on three sides, arranged above the lower filter-bed, at anopposite inclination, and approaching its filter-bed at its open end.

In testimony whereof I hereunto set my hand in the presence of twowitnesses.

HANS P. OLSEN.

In presence of GEO. T. MAY, Jr., MARY F. ALLEN.

